CTA Digital DB-ENEL1 EN-EL1 Rechargeable Lithium-Ion Battery (800mAh, 7.4V) Replacement for Nikon EN-EL1 Battery Replaces The Nikon En-El1 Battery 800mAh, 7.4V Retains full capacity, free from memory effect Lithium-ion for maximum battery life power 3 Year Warranty